No, and No
To start questions about trade skills are all relevent, but you want a person, this page has a verry limited representiaon on all servers, so this just isnt a good place to go and try and find somebody .
On to the real quesion, you will never find a engineer to make Mithril Spurs, as they are both made and ATTACHED by a Blackmsith, meaning you cant just buy them and apply like a armor kit, they need to be attached by a Smith. Without blacksmithing it is just a pile of useless objects.
Would your guildmates give up their curretn boot mod? that is the super relevent one, some folks have stuff as cool as +7 agi or a core armor kit(I have the latter) in both cases you would be a fool to overwirte it with Spurs, now buy some non soulbound boots and have sprus attached, those make ok gifts, if the players use a mod for Riding gear or they swap the boots arround manualy.